Home / 489,909,684.12-676,074,180.38-266,893,198.36

Finding the Fourth Proportional to 489,909,684.12, 676,074,180.38 and 266,893,198.36

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Solution

The fourth proportional to 489,909,684.12, 676,074,180.38 and 266,893,198.36 is: 368,311,968.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,909,684.12 : 676,074,180.38 = 266,893,198.36 : x
  2. Step 2: Convert to fraction form
    489,909,684.12/676,074,180.38 = 266,893,198.36/x
  3. Step 3: Cross multiply
    489,909,684.12x = 676,074,180.38 × 266,893,198.36
  4. Step 4: Simplify right side
    489,909,684.12x = 180,439,600,328,899,296
  5. Step 5: Solve for x
    x = 180,439,600,328,899,296/489,909,684.12
  6. Step 6: Final answer
    x = 368,311,968.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.